I think it was said in the story, although not in great detail, "they will operate autonomously",, one is to assume that means not via radio control,, they will go to a pre-programmed GPS location and drop the package and then return for the next assignment after charging I guess is the plan. With no radio interface,,no real way to hijack one other than tackling it when it gets close to the ground..
I do see kids of all ages using it as target practice,
